Taylor



H. R. TAYLOR. GEARUUTTING TooL.

"Nqr-715,219. Patented Mar. s, 1868.

Ezaewar Mwres.-

HENRY ILTAYLQR, OF'VWESTPORT, GONNEGTIOUT.

,Letters Paten-t 75,219, dated Marc/l. 3, 1868.

IMPROYED GEAR-CUTTING TOOL.

tige Schwule referrer tai'iztntlgcst tttets ilui'mt mit 1mi-ling' gaat nt ille tame.

'ro ALL WHoM 1r MAY consumi;-

Beit knownrthat I, HENRYB.. TAYLOR, of Westport, in the county of Fair-held, and State of Connecticut, have invented a new und useful Improvement in Rotary Cutters, applicable to cutting teeth of gear-wheels and other purposes, of which the following is'a full, clear, and exact description, reference being had tegthe accom` 'panying drawing, forming part of` this specication, and in which- FigureA 1 represents a longitudinal view of a rotary cutting-tool, with edge-exposure of its cutting-l lades, constructed in accordance with my improvement. V

Figure 2, a transverse view of saidcutting-tool, with the clamping-ring and locking-nut to' the blades removed, and showing thelatter as they are onniay be packed or set for turning'thfem in the formation of the cutter; and I i' v Figure 3,' a. similarview, but showihg the .blades in the position they are made to assume 'when ready for cutting. I

5 This, my invention, which is alike applicable to cutting' the teeth of gear-wheels, milling, and otherv purposes, according to the coniigurationfgiven/the blades at theirr cutting-edges, consists in making up the putter, that is, of a'rotary character, of a series of'detachable and separate cuttingbladesor teeth, swinging on pivots or centres connected with4 the stock in such manner as that, while they may similarly und simultaneously-be dressed or turned-on and in' connection with the stock, in a' sweep orl circle struck from the centre of the latter, said blades,.after being so dressed or formed, and suitably hardened, may be swung on their pivots' and clamped, so that they have a circumferential inclination relatively to the whole cutter, for the purpose of establishing clearance.

By this consti-nation of rotary cutter of thechract'er referred to, any on or more of the teeth or bladeS 5 may be separately sharpened or replaced by a new one when worn, without -removal of the rest, or without throwing away or casting on one side the whole cutter. y

'Referring to the accompanying drawing, in which the cutting-blades or 4teeth are shown, (as more clearly, seen i'n lig.' 1,) as having a contour or shape applicable: to cutting the teeth ofgearlwheels, buty which mayi be ofany suitable different conguration, so far as regards their noses or cutting-portion, accordingly as the same are required for screw-cutting, milling, or other purposes, A indicates the stock of the cutterof, say, cylindrical form, and which may be tted on `to the mandrel of a lathe, or be otherwise suitably held and rotated. This stock is or may be formed with a shoulder, a, and reduced portion-b, over which latter a clampingring, B, is slid, and lock-nut D, tted to hold the cutting-teeth or blades G, the same being'griped or held between the shoulder-a and ring B. These teeth or blades are madein the forro of curvilinear sections, where' they project fron -thestock, and are separate or distinct from the shoulder-portion a thereof. They are preferably of like size and :chapa-whereby their manufaclure is facilitated, and joint action rendered uniform. Loosely pivoted, as represented, they are of a self-adjusting character, and may -be similarly and simultaneously fitted or shaped or`finishcd, ready for hardening, by introducing around the reduced portion 6 of the stock, and between it and the tailsc of the blades, a thimble or'fring, which Will operate to set the tails u back, and cutting;u sections. or portions of said blades forward, there being a slight play or room left between them, by reason .of their size, which will admit of the blades being s'o swung on their pivots d, and whereby their bodies or tails are made to bear against each other, as represented in fig. 2, in which position being suitably clamped, said blades may be conjointlyturned circumferentially and laterally from and' with theistoclj: or holder'll` as a centre of motion. 5

Thus uniformly shaped or dressed, the -tliixnblo or ring holding them in the po'sition'repres'ented in iig. may be removed, and the teeth or blades hardened, after which they may be replaeedfon theirpivots d, and be swun'gor set so asta assume the position represented in g'. 3, causing-their tails to be supportedon the reduced portion "b, and their cutting-portions to be thrown back, as indicated by red circlein said iiguro, and which will give the cutting-portions a circumferential inclination lor dip inwards in a backwa'rdly direotiom'relatively t the whole cutter-or-travel of the advance edges ofthe noses of the blades, thus making the blades circumferern` tially eccentric to the stock or holder A, in order to establish or facilitate clearance in cutting, and to this position the blades are made self-adjusting'in a uniform manner by the resting of their tails onthe portionbot` the stock. A clamping-ring, B, may be fitted over the reduced portion b, und pivots al and lockingmut D applied 'to hold the blades steady to their places on the stock.

A rotury cutter thus constructed can readily have :my of its cutting-teeth 017 blades re-ground or replaced by new onesfthereby making the whole cutter more durable, and inducing considerable economy, while, as before oluxerved,y they are of ai self-adjusting character as regards uniformity of set, and proper clearance and support of them by or on the stock in cutting.

If desired, there may be arranged upon the name stock twQ or more rmys osets of cutting-teeth or' blades of dilerent thicknesses or shape for performing different kinds of work or thicknesses of cut from or by the same stock. y

y What is here claimed, und desired to be secured by Letters Patent; is f The rotary cutter, made up substantiallyes described, of a. stock or holder and loose or separate cuttingteeth or blades pivoted tothe holder, and forming curvilinear sections' outside of the latter, and constructed so as to be self-adjustable therein, or relatively thereto and eachother. l

' HENRY R. TAYLOR.`

Witnesses:

Y JoHN W. TAYLOR,

DAVID W. Snnxwroen.v 

